KRYSOVATYI, A. et al. Europe of regions: benchmarking of regional development in Bulgaria, Poland, Slovakia and Ukraine. Herald of Economics, [S. l.], n. 4(86), p. 191–215, 2019. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/981.. Acesso em: 27 jul. 2024.